金属镜面双反射消偏研究

Research on Eliminating Polarization Characteristic of Metal Reflectors of Double Reflection

金属镜面双反射消偏技术可以有效利用菲涅尔折反射定律,借助偏振补偿作用减少光辐射的偏振变化,有可能成为未来偏振探测中消除偏振的重要手段之一。文章针对双反射的消偏过程,进行光辐射偏振特性分析,探讨了装调误差对消偏性能的影响。计算输出光辐射偏振特征参量,对五种金属镜面材料在完全消偏和不完全消偏情况下的输出光辐射偏振特性进行了仿真分析,将这些材料的双反射消偏特性进行相互比较。研究结果表明:主折射率大于1的金属材料与主折射率小于1的金属材料分别表现出两种不同的双反射偏振变化特性;五种考察金属材料中,银和铝比较适合作为双反射消偏装置的镜面镀膜材料。文章的研究结果可以为双反射消偏装置的研制提供依据,为偏振补偿的工程应用提供技术参考。

Double reflection eliminating polarization can make full use of the law of Fresnel reflection, so that the change of polarization can be reduced by polarized compensation. It may become one of the important measures for future elimination of polarization. We conduct an analysis of double reflection eliminating polarization. The polarized characteristics of light is analyzed and the influence on polarized elimination of installation errors is studied. The characteristic parameters of output light are calculated, and then five kinds of metal are simulated and contrasted. The results show that the polarized characteristic of metals whose main refractive index is greater than 1 are different from those of metals with refractive index less than 1. Silver and aluminum adaptable for mirror face material. The conclusion of the article can provide rationales and reference for development of polarization compensation.